Myrotoxin B is a macrocyclic trichothecene first isolated in 1985.

[1] It was tested on Swiss mice and found to be very toxic, though not the most toxic of the three toxins that were tested at that time.

[2] It has also been isolated from Myrothecium roridum, a pathogen leaf spot that affects mulberry, though it is unknown if it is used as a pathotoxin.

[3] This article about an organic compound is a stub.

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